DevTools: only allow status bar items in status bars.

Source/devtools/front_end/inspectorStyle.css

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Anthony Ricaud <rik@webkit.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 371 matching lines @@
 }
 
 .close-button-gray:hover {
     background-position: -143px -96px;
 }
 
 .close-button-gray:active {
     background-position: -160px -96px;
 }
 
-.panel-status-bar {
-    border-top: none;
-    display: flex;
-    background-color: white;
-    flex: 0 0 23px;
-    position: relative;
-}
-
-.panel-status-bar > div {
-    margin: auto 0;
-}
-
-.panel-status-bar label {
-    margin: auto 0 auto 5px;
-    display: flex;
-    white-space: nowrap;
-    overflow: hidden;
-}
-
 .status-bar {
     position: relative;
     white-space: nowrap;
     height: 23px;
     overflow: hidden;
-    width: 100%;
     z-index: 12;
-    border-top: 1px solid rgb(202, 202, 202);
-    display: -webkit-flex;
+    display: flex;
+    flex: none;
 }
 
 .status-bar > div {
     display: inline-flex;
     overflow: visible;
 }
 
 .status-bar-item {
     display: inline-block;
     height: 22px;
@@ skipping 119 matching lines @@
     background-image: url(Images/statusbarButtonGlyphs_2x.png);
 }
 } /* media */
 
 input.status-bar-item {
     width: 200px;
     height: 20px;
     padding: 3px;
     margin: 1px 3px;
     background-color: white;
-    border: solid 1px rgb(236, 236, 236);
+    border: solid 1px rgb(216, 216, 216);
 }
 
 input.status-bar-item:focus,
 input.status-bar-item:hover {
     border: solid 1px rgb(202, 202, 202);
 }
 
 select.status-bar-item {
     min-width: 48px;
     color: rgb(48, 48, 48);
@@ skipping 1469 matching lines @@
     background-color: rgb(232, 164, 0) !important;
 }
 
 .bubble-repeat-count.error,
 .console-error-level .bubble-repeat-count {
     background-color: rgb(216, 35, 35) !important;
 }
 
 .storage-application-cache-status-icon,
 .storage-application-cache-connectivity-icon {
-    margin: 5px 5px 0;
+    margin: 0 5px;
     vertical-align: middle;
 }
 
 .status-bar-divider {
     margin-left: 7px;
     border-right: 1px solid #CCC;
 }
 
 .storage-application-cache-status,
 .storage-application-cache-connectivity {
@@ skipping 737 matching lines @@
     font-size: 80%;
     white-space: nowrap;
     pointer-events: none;
 }
 
 .link {
     cursor: pointer;
     text-decoration: underline;
     color: rgb(17, 85, 204);
 }